Counter locking mechanism and intelligent door lock

Abstract

The utility model discloses a back locking mechanism and an intelligent door lock, the back locking mechanism comprises a lock plate, a knob and a rear plate, and the lock plate is provided with a guide hole and a limiting hole communicated with the guide hole; the knob comprises a grip, a rotating shaft connected with the grip and a limiting block convexly arranged on the outer side wall of the rotating shaft, the grip is positioned on one side of the lock plate, the rotating shaft penetrates through the guide hole and then is convexly exposed out of the lock plate, and the limiting block penetrates through the limiting hole along with the rotating shaft and is positioned on the other side of the lock plate; the rear plate is provided with a through hole and an arc-shaped hole communicated with the through hole, the rear plate is installed on the lock plate, the through hole is communicated with the guide hole, the rotating shaft further penetrates through the through hole, the inner side wall of the arc-shaped hole and the lock plate define an arc-shaped groove communicated with the through hole, the limiting block is located in the arc-shaped groove, and the limiting hole and the arc-shaped groove are arranged in a staggered mode. The grip can drive the limiting block to rotate back and forth in the arc-shaped groove through the rotating shaft. The back locking mechanism is low in cost and high in production and assembly efficiency, and meanwhile the risk that a snap ring pops out to hurt people due to the fact that the snap ring is used for fixing originally is reduced.

Description

Technical Field

[0001] This utility model relates to the field of door lock structure technology, and in particular to a deadbolt mechanism and a smart door lock. Background Technology

[0002] Currently, smart door locks, as a type of smart home product, are gaining popularity among consumers due to their enhanced intelligence and ease of use in terms of security, identification, and management.

[0003] Currently, the knobs in smart door locks on the market are fixed to the lock frame with retaining rings. The lock frame is assembled from the lock plate and the back plate. However, using retaining rings for fixing is more troublesome to produce. It requires slotting and drilling on the knob, which is costly and has low production and installation efficiency. In addition, the retaining rings are easy to pop out when installing, which poses a certain risk of injury. Utility Model Content

[0004] The purpose of this utility model is to provide a deadbolt mechanism and a smart door lock to solve the technical problems of existing smart door locks where the knobs are fixed to the lock frame with retaining rings. Using retaining rings for fixing is relatively troublesome to produce, requiring grooves and holes to be machined on the knobs, resulting in high costs, low production and installation efficiency, and the retaining rings are prone to popping out during installation, posing a certain risk of injury.

[0005] This utility model provides a locking mechanism, including:

[0006] The locking plate is provided with a guide hole and a limiting hole communicating with the guide hole;

[0007] The knob includes a handle, a rotating shaft connected to the handle, and a limiting block protruding from the outer wall of the rotating shaft. The handle is located on one side of the lock plate, the rotating shaft protrudes from the lock plate after passing through the guide hole, and the limiting block passes through the limiting hole with the rotating shaft and is located on the other side of the lock plate.

[0008] The rear plate has a through hole and an arc-shaped hole communicating with the through hole. The rear plate is mounted on the lock plate. The through hole communicates with the guide hole. The rotating shaft also passes through the through hole. The inner sidewall of the arc-shaped hole and the lock plate form an arc-shaped groove communicating with the through hole. The limiting block is located in the arc-shaped groove. The limiting hole is offset from the arc-shaped groove. When the handle is rotated, the handle can drive the limiting block to reciprocate within the arc-shaped groove through the rotating shaft.

[0009] Furthermore, the lock plate is also provided with a recessed groove, and the guide hole and the limiting hole are both provided on the bottom wall of the recessed groove, with part of the grip located inside the recessed groove.

[0010] Furthermore, the lock plate includes a lock seat and a boss. The lock seat has a receiving cavity and a recessed groove. The boss protrudes from the bottom wall of the receiving cavity. The guide hole and the limiting hole both pass through the lock seat and the boss sequentially from the bottom wall of the recessed groove. The rear plate is installed on the lock seat. The inner sidewall of the arc-shaped hole and the boss enclose the arc-shaped groove to form the arc-shaped groove.

[0011] Furthermore, the locking mechanism also includes multiple fasteners, and the locking plate also includes multiple studs. Each stud protrudes from the bottom wall of the receiving cavity. The studs are provided with threaded holes, and the rear plate is provided with multiple through holes. The fasteners pass through the corresponding through holes and are connected to the threaded holes.

[0012] Furthermore, the locking plate also includes a foolproof post, which protrudes from the bottom wall of the receiving cavity, and the rear plate is also provided with a foolproof hole, into which the foolproof post is inserted.

[0013] Furthermore, the knob is provided with a square groove for inserting a square shaft and a pin hole for inserting a pin. The pin hole includes two opposite holes that extend from the inner wall of the square groove to the outer wall of the knob.

[0014] Furthermore, the rear plate covers the limiting hole.

[0015] Furthermore, the grip, the pivot, and the limiting block are integrally formed.

[0016] Furthermore, the knob is a twist-button made of plastic.

[0017] This utility model also provides an intelligent door lock, including the deadbolt mechanism as described above.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] When the knob's rotating shaft passes through the guide hole and the limiting block passes through the limiting hole, the back plate is installed on the lock plate. At this time, the inner wall of the arc-shaped hole of the back plate and the lock plate form an arc-shaped groove. The limiting block can rotate and run in the arc-shaped groove to fix the knob. There is no need for a retaining ring to fix the knob. The locking mechanism has low cost and high production and assembly efficiency. At the same time, it also reduces the risk of the retaining ring popping out and injuring people caused by the original use of retaining ring for fixing, which is easy to promote on a large scale. Attached Figure Description

[0020] Figure 1 Schematic diagram of the locking mechanism provided in the embodiment of this utility model Figure 1 ;

[0021] Figure 2Schematic diagram of the locking mechanism provided in the embodiment of this utility model Figure 2 ;

[0022] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0023] Figure 4 for Figure 2 Exploded view;

[0024] Figure 5 A cross-sectional view of the locking mechanism provided in an embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the locking mechanism provided in this embodiment of the utility model, excluding the knob, back plate, and fasteners. Figure 1 ;

[0026] Figure 7 This is a schematic diagram of the structure of the locking mechanism provided in this embodiment of the utility model, excluding the knob, back plate, and fasteners. Figure 2 ;

[0027] Figure 8 A schematic diagram of the knob provided in an embodiment of this utility model.

[0028] In the picture:

[0029] 10. Lock plate; 11. Guide hole; 12. Limiting hole; 13. Countersunk groove; 14. Lock seat; 141. Receiving cavity; 15. Boss; 16. Stud; 161. Threaded hole; 17. Anti-fooling post; 20. Knob; 21. Grip; 211. Grip plate; 212. Baffle; 22. Shaft; 221. Shaft body; 222. Protrusion; 23. Limiting block; 24. Square groove; 25. Pin hole; 251. Hole; 30. Back plate; 31. Through hole; 32. Arc hole; 33. Through hole; 34. Anti-fooling hole; 40. Arc groove; 50. Fastener. Detailed Implementation

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] Please see Figures 1 to 8As shown in the figure, this utility model embodiment discloses a deadbolt mechanism, which is applied in a smart door lock. The deadbolt mechanism includes a lock plate 10, a knob 20, and a back plate 30. The lock plate 10 has a through guide hole 11 and a limiting hole 12 communicating with the guide hole 11. The limiting hole 12 is elongated. The knob 20 includes a handle 21, a rotating shaft 22 connected to the handle 21, and a limiting block 23 protruding from the outer wall of the rotating shaft 22. The handle 21 is located on the lock plate 10. On one side, the rotating shaft 22 passes through the guide hole 11 and protrudes outside the lock plate 10. At the same time as the rotating shaft 22 passes through, the limiting block 23 passes through the limiting hole 12 with the rotating shaft 22 and is located on the other side of the lock plate 10. The limiting block 23 and the handle 21 are located on opposite sides of the lock plate 10. Then, the knob 20 is manually rotated to a certain angle, which is 180 degrees. The limiting block 23 is offset from the limiting hole 12, so that the knob 20 can be fixed on the lock plate 10.

[0032] The rear plate 30 is provided with a through hole 31 and an arc-shaped hole 32 communicating with the through hole 31. The rear plate 30 is installed on the lock plate 10. The through hole 31 communicates with the guide hole 11. The rotating shaft 22 also passes through the through hole 31. The arc-shaped hole 32 is recessed on the inner side wall of the through hole 31. The inner side wall of the arc-shaped hole 32 and the lock plate 10 enclose an arc-shaped groove 40 communicating with the through hole 31. The limiting block 23 is located in the arc-shaped groove 40. The limiting hole 12 is offset from the arc-shaped groove 40. When the handle 21 is rotated, the handle 21 can drive the limiting block 23 to reciprocate within the arc-shaped groove 40 through the rotating shaft 22 to fix the knob 20, so that the knob 20 will not fall out. There is no need for a retaining ring to fix the knob 20. The locking mechanism has low cost and high production and assembly efficiency.

[0033] In this embodiment, the grip 21 includes a grip plate 211 and a circular baffle 212. The grip plate 211 protrudes from the baffle 212. The rotating shaft 22 is connected to the baffle 212. The outer diameter of the rotating shaft 22 is smaller than the outer diameter of the baffle 212. The grip 21, the rotating shaft 22 and the limiting block 23 are integrally formed to reduce the production cost of the knob 20. The shape of the grip 21 can be diversified and can be set as needed.

[0034] In some embodiments, the rear plate 30 covers the limiting hole 12 to prevent the limiting block 23 from disengaging from the locking plate 10 through the limiting hole 12 during the use of the anti-locking mechanism.

[0035] In some embodiments, the locking plate 10 is further provided with a recessed groove 13, and the guide hole 11 and the limiting hole 12 are both provided on the bottom wall of the recessed groove 13. Part of the grip 21 is located in the recessed groove 13 to protect the grip 21 during rotation and prevent the knob 20 from breaking during rotation.

[0036] In this embodiment, the lock plate 10 includes a lock seat 14 and a boss 15. The lock seat 14 is provided with a receiving cavity 141 and the aforementioned groove 13. The groove 13 and the receiving cavity 141 are respectively provided on two opposite sides of the lock seat 14. The boss 15 protrudes from the bottom wall of the receiving cavity 141. The guide hole 11 and the limiting hole 12 both pass through the lock seat 14 and the boss 15 sequentially from the bottom wall of the groove 13. The rear plate 30 is installed on the lock seat 14. The inner side wall of the arc-shaped hole 32 and the boss 15 enclose each other to form the aforementioned arc-shaped groove 40.

[0037] The locking mechanism also includes multiple fasteners 50, and the locking plate 10 also includes multiple studs 16. Each stud 16 protrudes from the bottom wall of the receiving cavity 141 and has a threaded hole 161. The rear plate 30 has multiple through holes 33. The fasteners 50 pass through the corresponding through holes 33 and connect with the threaded holes 161, thereby fixing the rear plate 30 to the locking plate 10. The fasteners 50 can be screws.

[0038] The locking plate 10 also includes a foolproof post 17, which protrudes from the bottom wall of the receiving cavity 141. The rear plate 30 is also provided with a foolproof hole 34. The foolproof post 17 is inserted into the foolproof hole 34 to prevent the rear plate 30 from being installed backwards, so that the limiting hole 12 and the arc groove 40 cannot be staggered. Of course, by staggering the positions of each stud 16, the stud 16 can also be used as a foolproof post 17.

[0039] The knob 20 is provided with a square groove 24 for inserting a square shaft and a pin hole 25 for inserting a pin. The pin hole 25 includes two opposite holes 251 that extend through the inner wall of the square groove 24 to the outer wall of the knob 20. Both the pin hole 25 and the square groove 24 are provided on the rotating shaft 22.

[0040] The pivot 22 includes a shaft body 221 and a protrusion 222. The shaft body 221 is connected to the handle 21. The protrusion 222 protrudes from the end of the shaft body 221 away from the handle 21. A square groove 24 extends through the protrusion 222 from the end face of the protrusion 222 away from the handle 21 and is recessed toward the middle of the shaft body 221. A hole 251 extends through the inner wall of the square groove 24 to the outer wall of the protrusion 222.

[0041] In some embodiments, the knob 20 is a twist key made of plastic material, which can be directly injection molded, reducing the production cost of the locking mechanism.

[0042] This utility model also discloses a smart door lock, including the deadbolt mechanism as described above. The deadbolt mechanism is installed on the door panel and is located on the indoor side. This deadbolt mechanism can be easily installed and can improve the installation efficiency of the smart door lock.

[0043] The smart door lock also includes a lock body, a square shaft, and a bolt. The square shaft has a through hole, one end of which is inserted into a square slot 24 and the other end is connected to the bolt inside the lock body. The middle part of the bolt is inserted into the through hole, and the two ends of the bolt are respectively inserted into two holes 251. By rotating the knob 20, the bolt can be extended or retracted through the square shaft.

[0044] The assembly method for smart door locks includes the following steps:

[0045] Step S101: Fix the knob 20. First, the rotating shaft 22 of the knob 20 passes through the groove 13 and the guide hole 11 from one side of the locking plate 10 and protrudes outside the locking plate 10. The limiting block 23 on the knob 20 passes through the limiting hole 12 together with the rotating shaft 22. The handle 21 and the limiting block 23 of the knob 20 are located on opposite sides of the locking plate 10. Then, rotate the knob 20 180 degrees so that the limiting block 23 and the limiting hole 12 are staggered.

[0046] Step S102: Fix the back plate 30. First, insert the anti-fooling post 17 on the locking plate 10 into the anti-fooling hole 34 on the back plate 30. At the same time, the inner side wall of the arc-shaped hole 32 on the back plate 30 and the locking plate 10 form an arc-shaped groove 40. The limiting block 23 can slide in the arc-shaped groove 40. Finally, multiple fasteners 50 are used to pass through the through holes 33 on the back plate 30 and connect with the corresponding threaded holes 161 on the locking plate 10 to fix the back plate 30 to the locking plate 10.

[0047] Step S103: Fix the square shaft. One end of the square shaft is inserted into the square groove 24 of the knob 20, and the other end is connected to the lock tongue in the lock body. Install the pin, wherein the middle part of the pin is inserted into the through hole of the square shaft, and the two ends of the pin are respectively inserted into the two holes 251 of the knob 20. Rotating the knob 20 can drive the lock tongue to extend or retract accordingly.

[0048] Smart door locks have the following beneficial effects:

[0049] 1. Assembling knobs 20 is more efficient and saves assembly time in the production of smart door locks;

[0050] 2. No retaining ring is required for fixation, and there is no risk of the retaining ring popping out and injuring people when manufacturing and installing the knob 20;

[0051] 3. Lower parts cost, saving on the cost of machining grooves and drilling.

[0052] In summary, when the rotating shaft 22 of the knob 20 passes through the guide hole 11 and the limiting block 23 passes through the limiting hole 12, the rear plate 30 is installed on the locking plate 10. At this time, the inner wall of the arc-shaped hole 32 of the rear plate 30 and the locking plate 10 form an arc-shaped groove 40. The limiting block 23 can rotate within the arc-shaped groove 40 to fix the knob 20. There is no need for a retaining ring to fix the knob 20. The locking mechanism has low cost and high production and assembly efficiency. It also reduces the risk of the retaining ring popping out and injuring people caused by the original use of retaining ring for fixing, which is convenient for widespread promotion.

[0053] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A reverse locking mechanism, characterized in that, The anti-locking mechanism comprises: a lock plate provided with a guide hole and a limiting hole in communication with the guide hole; a knob comprising a handle, a rotating shaft connected with the handle, and a limiting block protruding from the outer wall of the rotating shaft, the handle being located on one side of the lock plate, the rotating shaft protruding from the lock plate after passing through the guide hole, and the limiting block being located on the other side of the lock plate after passing through the limiting hole; a back plate provided with a through hole and an arc-shaped hole in communication with the through hole, the back plate being installed on the lock plate, the through hole being in communication with the guide hole, the rotating shaft also passing through the through hole, the inner wall of the arc-shaped hole and the lock plate forming an arc-shaped groove in communication with the through hole, and the limiting block being located in the arc-shaped groove, the limiting hole being arranged staggered with the arc-shaped groove, and the handle being able to drive the limiting block to reciprocating rotate in the arc-shaped groove through the rotating shaft when the handle is rotated.

2. The reverse locking mechanism of claim 1, wherein, The lock plate is further provided with a sunken groove, and the guide hole and the limiting hole are both arranged on the bottom wall of the sunken groove, and part of the handle is located in the sunken groove.

3. The reverse locking mechanism of claim 2, wherein, The lock plate comprises a lock seat and a boss, the lock seat is provided with a containing cavity and the sunken groove, the boss protrudes from the bottom wall of the containing cavity, the guide hole and the limiting hole both pass through the lock seat and the boss in sequence from the bottom wall of the sunken groove, the back plate is installed on the lock seat, and the inner wall of the arc-shaped hole and the boss form the arc-shaped groove.

4. The reverse locking mechanism of claim 3, wherein, The anti-locking mechanism further comprises a plurality of fasteners, the lock plate further comprises a plurality of studs, each of the studs protrudes from the bottom wall of the containing cavity, the studs are provided with threaded holes, the back plate is provided with a plurality of through holes, and the fasteners are connected with the threaded holes after passing through the corresponding through holes.

5. The reverse locking mechanism of claim 3, wherein, The lock plate further comprises a foolproof column, the foolproof column protrudes from the bottom wall of the containing cavity, and the back plate is further provided with a foolproof hole, the foolproof column being inserted into the foolproof hole.

6. The reverse locking mechanism of claim 1, wherein, The knob is provided with a square groove for inserting a square shaft and a pin hole for inserting a pin, the pin hole comprises two oppositely arranged holes, and the holes extend from the inner wall of the square groove to the outer wall of the knob.

7. The reverse locking mechanism of claim 1, wherein, The back plate covers the limiting hole.

8. The reverse locking mechanism of claim 1, wherein, The handle, the rotating shaft and the limiting block are integrally formed.

9. The reverse locking mechanism of claim 1, wherein, The knob is a plastic twist key.

10. An intelligent door lock, characterized by The anti-locking mechanism comprises any one of claims 1-9. The anti-locking mechanism comprises any one of claims 1-9.

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